67998721

素因数分解:

$7^4\times {\mathrm{127}}^1\times {\mathrm{223}}^1$

素因数の和:378

約数の個数: 20

約数和(自身を含む): 80310272

約数和(自身を除く): 12311551

約数列:

[1, 7, 49, 127, 223, 343, 889, 1561, 2401, 6223, 10927, 28321, 43561, 76489, 198247, 304927, 535423, 1387729, 9714103, 67998721]

約数ペア:

[(1, 67998721), (7, 9714103), (49, 1387729), (127, 535423), (223, 304927), (343, 198247), (889, 76489), (1561, 43561), (2401, 28321), (6223, 10927)]